Features Applications ■ True power-on system ■ Electronic stability control ■ Straight line connector ■ Electronic brake force distribution ■ Output over J1939 CAN subset ■ Lane departure warning ■ Various column mounting proposals ■ Trailer sway control ■ Rear axle steering Preliminary Non-Contacting Steering Angle Sensor for Commercial Vehicles Introduction The Bourns® Non-Contacting Steering Angle Sensor is specifically designed for commercial vehicle steering applications. The sensor is based on two magneto-resistive (AMR) sensor chips. Each of them converts an angle position of a permanent magnet into two analog signals (one sine and one cosine signal). A highly-efficient algorithm within the sensor’s microprocessor calculates the absolute angular position of the steering system. This sensor takes into account the increased steering angular range used in commercial vehicles as well as larger voltage range and higher overvoltage protection requirements which are needed during start-up. Electrical Interface Specifications Angular Position Range .........................................................................................................................................................................................±1540 ° Resolution ........................................................................................................................................................................................0.1 ° Linearity .........................................................................................................................................................................................±2.5 ° Angular Speed Range ......................................................................................................................................................................................±2000 °/s Data and Control Interface CAN J1939 (Optional CAN 2.0B).............................................................................................................................................500 kbit/s Data Rate...................................................................................................................................................................................... 10 ms Optional Zero Position .......................................................................... Adjustable at every mechanical position through CAN command Diagnostic and Error Handling................................................................................................................................................Via CAN bus ASIL-B Compliant version in development Optional secure version with 2nd microcontroller (for ASIL-D rated systems) Firmware Upgrade ..................................................................................................................................................................Via CAN bus (Optional OBD programmable) Power Supply Voltage Supply ........................................................................................................................................................12 V (Optional 24 V) Overvoltage Protection .................................................................................................................................................................8-32 V Current Consumption........................................................................................................................... 50 mA (no idle current required) Temperature Range ..........................................................................................................................................................-40 °C to +85 °C Typical Output Characteristic 4 1000 2 500 Forward Movement 0 0 Backward Movement -500 -2 Nonlinearity (Degrees) Indicated Angular Position (Degrees) 1500 -1000 -4 -1500 -2000 -1500 -1000 -500 0 500 1000 1500 2000 Angular Position (Degrees) Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. Preliminary Steering Angle Sensor for Commercial Vehicles 3312 Non-Contacting - 2 mm SMD Trimming Potentiometer Design and Mechanical Interface Proposal 65.7 24.0 50.5 R 40.4 Final design and housing are subject to change and customer preferences. DIMENSIONS: MM Europe: Bourns Sensors GmbH Robert-Bosch-Str. 14 D-82054 Sauerlach Phone: +49 (0) 8104 646-0 The Americas: Bourns, Inc. 1660 N. Opdyke Road, Ste. 200 Auburn Hills, MI 48326-2655 USA Phone: +1 248 926-4088 Asia: Bourns, Inc. 10F, No. 146, Sung Jiang Road Taipei, Taiwan, 104 PRC Phone: +886 2 2562-4117 www.bourns.com [email protected] 02/13 Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.